def getParamValues(self):
if self.mUpdateExistingGroupBox.isChecked():
fieldName = self.mExistingFieldComboBox.currentText()
else:
fieldName = self.mOutputFieldNameLineEdit.text()
layer = self.cmbInputLayer.currentLayer()
context = dataobjects.createContext()
parameters = {}
parameters['INPUT'] = layer
parameters['FIELD_NAME'] = fieldName
parameters['FIELD_TYPE'] = self.mOutputFieldTypeComboBox.currentIndex()
parameters['FIELD_LENGTH'] = self.mOutputFieldWidthSpinBox.value()
parameters[
'FIELD_PRECISION'] = self.mOutputFieldPrecisionSpinBox.value()
parameters['NEW_FIELD'] = self.mNewFieldGroupBox.isChecked()
parameters['FORMULA'] = self.builder.expressionText()
output = QgsProcessingOutputLayerDefinition()
if self.leOutputFile.text().strip():
output.sink = QgsProperty.fromValue(
self.leOutputFile.text().strip())
else:
output.sink = QgsProperty.fromValue('memory:')
output.destinationProject = context.project()
parameters['OUTPUT'] = output
ok, msg = self.alg.checkParameterValues(parameters, context)
if not ok:
QMessageBox.warning(self, self.tr('Unable to execute algorithm'),
msg)
return {}
return parameters
def getConsoleCommands(self,
parameters,
context,
feedback,
executing=True):
context = dataobjects.createContext()
inLayer = QgsProcessingUtils.mapLayerFromString(
self.getParameterValue(self.INPUT), context)
inRasterLayer = QgsProcessingUtils.mapLayerFromString(
self.getParameterValue(self.INPUT_RASTER), context)
ogrLayer = GdalUtils.ogrConnectionString(inLayer, context)[1:-1]
ogrRasterLayer = GdalUtils.ogrConnectionString(inRasterLayer,
context)[1:-1]
arguments = []
arguments.append('-a')
arguments.append(str(self.getParameterValue(self.FIELD)))
arguments.append('-l')
arguments.append(GdalUtils.ogrLayerName(inLayer))
arguments.append(ogrLayer)
arguments.append(ogrRasterLayer)
return ['gdal_rasterize', GdalUtils.escapeAndJoin(arguments)]
def save(self):
toSave = []
context = dataobjects.createContext()
for row in range(self.tblParameters.rowCount()):
algParams = {}
algOutputs = {}
col = 0
alg = self.alg
for param in alg.parameterDefinitions():
if param.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
if param.isDestination():
continue
wrapper = self.wrappers[row][col]
if not param.checkValueIsAcceptable(wrapper.value(), context):
self.parent.messageBar().pushMessage(
"",
self.tr(
'Wrong or missing parameter value: {0} (row {1})').
format(param.description(), row + 1),
level=Qgis.Warning,
duration=5)
return
algParams[param.name()] = param.valueAsPythonString(
wrapper.value(), context)
col += 1
for out in alg.destinationParameterDefinitions():
if out.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
widget = self.tblParameters.cellWidget(row, col)
text = widget.getValue()
if text.strip() != '':
algOutputs[out.name()] = text.strip()
col += 1
else:
self.parent.messageBar().pushMessage(
"",
self.tr('Wrong or missing output value: {0} (row {1})'
).format(out.description(), row + 1),
level=Qgis.Warning,
duration=5)
return
toSave.append({
self.PARAMETERS: algParams,
self.OUTPUTS: algOutputs
})
settings = QgsSettings()
last_path = settings.value("/Processing/LastBatchPath",
QDir.homePath())
filename, __ = QFileDialog.getSaveFileName(
self, self.tr('Save Batch'), last_path,
self.tr('JSON files (*.json)'))
if filename:
if not filename.endswith('.json'):
filename += '.json'
last_path = QFileInfo(filename).path()
settings.setValue('/Processing/LastBatchPath', last_path)
with open(filename, 'w') as f:
json.dump(toSave, f)
def _executeAlgorithm(alg):
ok, message = alg.canExecute()
if not ok:
dlg = MessageDialog()
dlg.setTitle(Processing.tr('Missing dependency'))
dlg.setMessage(
Processing.tr('<h3>Missing dependency. This algorithm cannot '
'be run :-( </h3>\n{0}').format(message))
dlg.exec_()
return
if (alg.countVisibleParameters()) > 0:
dlg = alg.createCustomParametersWidget(None)
if not dlg:
dlg = AlgorithmDialog(alg)
canvas = iface.mapCanvas()
prevMapTool = canvas.mapTool()
dlg.show()
dlg.exec_()
if canvas.mapTool() != prevMapTool:
try:
canvas.mapTool().reset()
except:
pass
canvas.setMapTool(prevMapTool)
else:
feedback = MessageBarProgress()
context = dataobjects.createContext(feedback)
parameters = {}
ret, results = execute(alg, parameters, context, feedback)
handleAlgorithmResults(alg, context, feedback)
feedback.close()
def setDynamicLayer(self, layer):
context = createContext()
try:
if isinstance(layer, QgsProcessingFeatureSourceDefinition):
layer, ok = layer.source.valueAsString(context.expressionContext())
if isinstance(layer, str):
layer = QgsProcessingUtils.mapLayerFromString(layer, context)
self.btnDataDefined.setVectorLayer(layer)
except:
pass
def testProcessingException(self):
"""
Test that Python exception is caught when running an alg
"""
alg = TestAlg()
context = createContext()
feedback = QgsProcessingFeedback()
results, ok = alg.run({}, context, feedback)
self.assertFalse(ok)
def setLayer(self, layer):
context = dataobjects.createContext()
if layer == self._layer:
return
if isinstance(layer, QgsProcessingFeatureSourceDefinition):
layer, ok = layer.source.valueAsString(context.expressionContext())
if isinstance(layer, str):
layer = QgsProcessingUtils.mapLayerFromString(layer, context)
if not isinstance(layer, QgsVectorLayer):
layer = None
self._layer = layer
self.widget.setLayer(self._layer)
def showExpressionsBuilder(self):
context = createExpressionContext()
processing_context = createContext()
scope = self.modelParametersDialog.model.createExpressionContextScopeForChildAlgorithm(self.modelParametersDialog.childId, processing_context)
context.appendScope(scope)
highlighted = scope.variableNames()
context.setHighlightedVariables(highlighted)
dlg = QgsExpressionBuilderDialog(None, str(self.leText.text()), self, 'generic', context)
dlg.setWindowTitle(self.tr('Expression Based Input'))
if dlg.exec_() == QDialog.Accepted:
exp = QgsExpression(dlg.expressionText())
if not exp.hasParserError():
self.setValue(dlg.expressionText())
def executeAlgorithm(self):
item = self.algorithmTree.currentItem()
if isinstance(item, TreeAlgorithmItem):
alg = QgsApplication.processingRegistry().createAlgorithmById(
item.alg.id())
if not alg:
return
ok, message = alg.canExecute()
if not ok:
dlg = MessageDialog()
dlg.setTitle(self.tr('Error executing algorithm'))
dlg.setMessage(
self.tr('<h3>This algorithm cannot '
'be run :-( </h3>\n{0}').format(message))
dlg.exec_()
return
if alg.countVisibleParameters() > 0:
dlg = alg.createCustomParametersWidget(self)
if not dlg:
dlg = AlgorithmDialog(alg)
canvas = iface.mapCanvas()
prevMapTool = canvas.mapTool()
dlg.show()
dlg.exec_()
if canvas.mapTool() != prevMapTool:
try:
canvas.mapTool().reset()
except:
pass
canvas.setMapTool(prevMapTool)
if dlg.wasExecuted():
showRecent = ProcessingConfig.getSetting(
ProcessingConfig.SHOW_RECENT_ALGORITHMS)
if showRecent:
self.addRecentAlgorithms(True)
else:
feedback = MessageBarProgress()
context = dataobjects.createContext(feedback)
parameters = {}
ret, results = execute(alg, parameters, context, feedback)
handleAlgorithmResults(alg, context, feedback)
feedback.close()
def accept(self):
context = dataobjects.createContext()
try:
parameters = self.getParameterValues()
self.setOutputValues()
ok, msg = self.algorithm().checkParameterValues(
parameters, context)
if not ok:
QMessageBox.warning(self,
self.tr('Unable to execute algorithm'),
msg)
return
description = algAsDict(self.algorithm())
description["name"] = self.settingsPanel.txtName.text().strip()
description["group"] = self.settingsPanel.txtGroup.text().strip()
if not (description["name"] and description["group"]):
self.tabWidget().setCurrentIndex(self.tabWidget().count() - 1)
return
validChars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789:'
filename = ''.join(c for c in description["name"]
if c in validChars).lower() + ".json"
filepath = os.path.join(preconfiguredAlgorithmsFolder(), filename)
with open(filepath, "w") as f:
json.dump(description, f)
QgsApplication.processingRegistry().providerById(
'preconfigured').refreshAlgorithms()
except AlgorithmDialogBase.InvalidParameterValue as e:
try:
self.buttonBox().accepted.connect(
lambda: e.widget.setPalette(QPalette()))
palette = e.widget.palette()
palette.setColor(QPalette.Base, QColor(255, 255, 0))
e.widget.setPalette(palette)
self.messageBar().pushMessage(
"",
self.tr('Missing parameter value: {0}').format(
e.parameter.description()),
level=Qgis.Warning,
duration=5)
return
except:
QMessageBox.critical(
self, self.tr('Unable to execute algorithm'),
self.tr('Wrong or missing parameter values'))
self.close()
def parametersHaveChanged(self):
context = createContext()
feedback = QgsProcessingFeedback()
try:
parameters = self.parent.getParameterValues()
for output in self.alg.destinationParameterDefinitions():
if not output.name() in parameters or parameters[output.name()] is None:
parameters[output.name()] = self.tr("[temporary file]")
for p in self.alg.parameterDefinitions():
if (not p.name() in parameters and not p.flags() & QgsProcessingParameterDefinition.FlagOptional) \
or (not p.checkValueIsAcceptable(parameters[p.name()])):
# not ready yet
self.text.setPlainText('')
return
commands = self.alg.getConsoleCommands(parameters, context, feedback, executing=False)
commands = [c for c in commands if c not in ['cmd.exe', '/C ']]
self.text.setPlainText(" ".join(commands))
except AlgorithmDialogBase.InvalidParameterValue as e:
self.text.setPlainText(self.tr("Invalid value for parameter '{0}'").format(e.parameter.description()))
def execute(alg, parameters, context=None, feedback=None):
"""Executes a given algorithm, showing its progress in the
progress object passed along.
Return true if everything went OK, false if the algorithm
could not be completed.
"""
if feedback is None:
feedback = QgsProcessingFeedback()
if context is None:
context = dataobjects.createContext(feedback)
try:
results, ok = alg.run(parameters, context, feedback)
return ok, results
except QgsProcessingException as e:
QgsMessageLog.logMessage(str(sys.exc_info()[0]), 'Processing', Qgis.Critical)
if feedback is not None:
feedback.reportError(e.msg)
return False, {}
def __init__(self, dialog, param):
super(ExtentSelectionPanel, self).__init__(None)
self.setupUi(self)
self.dialog = dialog
self.param = param
self.crs = QgsProject.instance().crs()
if self.param.flags() & QgsProcessingParameterDefinition.FlagOptional:
if hasattr(self.leText, 'setPlaceholderText'):
self.leText.setPlaceholderText(
self.tr('[Leave blank to use min covering extent]'))
self.btnSelect.clicked.connect(self.selectExtent)
if iface is not None:
canvas = iface.mapCanvas()
self.prevMapTool = canvas.mapTool()
self.tool = RectangleMapTool(canvas)
self.tool.rectangleCreated.connect(self.updateExtent)
else:
self.prevMapTool = None
self.tool = None
if param.defaultValue() is not None:
context = createContext()
rect = QgsProcessingParameters.parameterAsExtent(param, {param.name(): param.defaultValue()}, context)
crs = QgsProcessingParameters.parameterAsExtentCrs(param, {param.name(): param.defaultValue()}, context)
if not rect.isNull():
try:
s = '{},{},{},{}'.format(
rect.xMinimum(), rect.xMaximum(), rect.yMinimum(), rect.yMaximum())
if crs.isValid():
s += ' [' + crs.authid() + ']'
self.crs = crs
self.leText.setText(s)
except:
pass
def accept(self):
keepOpen = ProcessingConfig.getSetting(
ProcessingConfig.KEEP_DIALOG_OPEN)
parameters = self.getParamValues()
if parameters:
with OverrideCursor(Qt.WaitCursor):
self.feedback = FieldCalculatorFeedback(self)
self.feedback.progressChanged.connect(self.setPercentage)
context = dataobjects.createContext()
ProcessingLog.addToLog(
self.alg.asPythonCommand(parameters, context))
self.executed, results = execute(self.alg, parameters, context,
self.feedback)
self.setPercentage(0)
if self.executed:
handleAlgorithmResults(self.alg, context, self.feedback,
not keepOpen)
self._wasExecuted = self.executed or self._wasExecuted
if not keepOpen:
QDialog.reject(self)
def value(self):
layers = ''
context = dataobjects.createContext()
for i in range(self.layersTree.topLevelItemCount()):
item = self.layersTree.topLevelItem(i)
if item:
layerName = item.text(0)
layer = QgsProcessingUtils.mapLayerFromString(layerName, context)
if not layer:
continue
provider = layer.dataProvider()
if not provider:
continue
interpolationAttribute = item.text(1)
interpolationSource = QgsInterpolator.ValueAttribute
if interpolationAttribute == 'Z_COORD':
interpolationSource = QgsInterpolator.ValueZ
fieldIndex = -1
else:
fieldIndex = layer.fields().indexFromName(interpolationAttribute)
comboBox = self.layersTree.itemWidget(self.layersTree.topLevelItem(i), 2)
inputTypeName = comboBox.currentText()
if inputTypeName == self.tr('Points'):
inputType = QgsInterpolator.SourcePoints
elif inputTypeName == self.tr('Structure lines'):
inputType = QgsInterpolator.SourceStructureLines
else:
inputType = QgsInterpolator.SourceBreakLines
layers += '{}::~::{:d}::~::{:d}::~::{:d};'.format(layer.source(),
interpolationSource,
fieldIndex,
inputType)
return layers[:-1]
def accept(self):
feedback = self.createFeedback()
context = dataobjects.createContext(feedback)
checkCRS = ProcessingConfig.getSetting(
ProcessingConfig.WARN_UNMATCHING_CRS)
try:
parameters = self.getParameterValues()
if checkCRS and not self.algorithm().validateInputCrs(
parameters, context):
reply = QMessageBox.question(
self, self.tr("Unmatching CRS's"),
self.tr('Parameters do not all use the same CRS. This can '
'cause unexpected results.\nDo you want to '
'continue?'), QMessageBox.Yes | QMessageBox.No,
QMessageBox.No)
if reply == QMessageBox.No:
return
ok, msg = self.algorithm().checkParameterValues(
parameters, context)
if msg:
QMessageBox.warning(self,
self.tr('Unable to execute algorithm'),
msg)
return
self.runButton().setEnabled(False)
self.cancelButton().setEnabled(False)
buttons = self.mainWidget().iterateButtons
self.iterateParam = None
for i in range(len(list(buttons.values()))):
button = list(buttons.values())[i]
if button.isChecked():
self.iterateParam = list(buttons.keys())[i]
break
self.clearProgress()
self.setProgressText(
QCoreApplication.translate('AlgorithmDialog',
'Processing algorithm…'))
self.setInfo(
self.tr('AlgorithmDialog',
'<b>Algorithm \'{0}\' starting…</b>').format(
self.algorithm().displayName()),
escapeHtml=False)
feedback.pushInfo(self.tr('Input parameters:'))
display_params = []
for k, v in parameters.items():
display_params.append("'" + k + "' : " +
self.algorithm().parameterDefinition(
k).valueAsPythonString(v, context))
feedback.pushCommandInfo('{ ' + ', '.join(display_params) + ' }')
feedback.pushInfo('')
start_time = time.time()
if self.iterateParam:
# Make sure the Log tab is visible before executing the algorithm
try:
self.showLog()
self.repaint()
except:
pass
self.cancelButton().setEnabled(
self.algorithm().flags()
& QgsProcessingAlgorithm.FlagCanCancel)
if executeIterating(self.algorithm(), parameters,
self.iterateParam, context, feedback):
feedback.pushInfo(
self.tr(
'Execution completed in {0:0.2f} seconds'.format(
time.time() - start_time)))
self.cancelButton().setEnabled(False)
self.finish(True, parameters, context, feedback)
else:
self.cancelButton().setEnabled(False)
self.resetGui()
else:
command = self.algorithm().asPythonCommand(parameters, context)
if command:
ProcessingLog.addToLog(command)
self.cancelButton().setEnabled(
self.algorithm().flags()
& QgsProcessingAlgorithm.FlagCanCancel)
def on_complete(ok, results):
if ok:
feedback.pushInfo(
self.tr('Execution completed in {0:0.2f} seconds'.
format(time.time() - start_time)))
feedback.pushInfo(self.tr('Results:'))
feedback.pushCommandInfo(pformat(results))
else:
feedback.reportError(
self.tr('Execution failed after {0:0.2f} seconds'.
format(time.time() - start_time)))
feedback.pushInfo('')
if self.feedback_dialog is not None:
self.feedback_dialog.close()
self.feedback_dialog.deleteLater()
self.feedback_dialog = None
self.cancelButton().setEnabled(False)
self.finish(ok, results, context, feedback)
if not (self.algorithm().flags()
& QgsProcessingAlgorithm.FlagNoThreading):
# Make sure the Log tab is visible before executing the algorithm
self.showLog()
task = QgsProcessingAlgRunnerTask(self.algorithm(),
parameters, context,
feedback)
task.executed.connect(on_complete)
self.setCurrentTask(task)
else:
self.feedback_dialog = self.createProgressDialog()
self.feedback_dialog.show()
ok, results = execute(self.algorithm(), parameters,
context, feedback)
on_complete(ok, results)
except AlgorithmDialogBase.InvalidParameterValue as e:
try:
self.buttonBox().accepted.connect(
lambda e=e: e.widget.setPalette(QPalette()))
palette = e.widget.palette()
palette.setColor(QPalette.Base, QColor(255, 255, 0))
e.widget.setPalette(palette)
except:
pass
self.messageBar().clearWidgets()
self.messageBar().pushMessage(
"",
self.tr("Wrong or missing parameter value: {0}").format(
e.parameter.description()),
level=Qgis.Warning,
duration=5)
def runAlgorithm(algOrName,
parameters,
onFinish=None,
feedback=None,
context=None):
if isinstance(algOrName, QgsProcessingAlgorithm):
alg = algOrName
else:
alg = QgsApplication.processingRegistry().createAlgorithmById(
algOrName)
if feedback is None:
feedback = QgsProcessingFeedback()
if alg is None:
# fix_print_with_import
print('Error: Algorithm not found\n')
msg = Processing.tr('Error: Algorithm {0} not found\n').format(
algOrName)
feedback.reportError(msg)
raise QgsProcessingException(msg)
# check for any mandatory parameters which were not specified
for param in alg.parameterDefinitions():
if param.name() not in parameters:
if not param.flags(
) & QgsProcessingParameterDefinition.FlagOptional:
# fix_print_with_import
msg = Processing.tr(
'Error: Missing parameter value for parameter {0}.'
).format(param.name())
print('Error: Missing parameter value for parameter %s.' %
param.name())
feedback.reportError(msg)
raise QgsProcessingException(msg)
if context is None:
context = dataobjects.createContext(feedback)
ok, msg = alg.checkParameterValues(parameters, context)
if not ok:
# fix_print_with_import
print('Unable to execute algorithm\n' + str(msg))
msg = Processing.tr('Unable to execute algorithm\n{0}').format(msg)
feedback.reportError(msg)
raise QgsProcessingException(msg)
if not alg.validateInputCrs(parameters, context):
print('Warning: Not all input layers use the same CRS.\n' +
'This can cause unexpected results.')
feedback.pushInfo(
Processing.
tr('Warning: Not all input layers use the same CRS.\nThis can cause unexpected results.'
))
ret, results = execute(alg, parameters, context, feedback)
if ret:
feedback.pushInfo(Processing.tr('Results: {}').format(results))
if onFinish is not None:
onFinish(alg, context, feedback)
else:
# auto convert layer references in results to map layers
for out in alg.outputDefinitions():
if out.name() not in results:
continue
if isinstance(out, (QgsProcessingOutputVectorLayer,
QgsProcessingOutputRasterLayer,
QgsProcessingOutputMapLayer)):
result = results[out.name()]
if not isinstance(result, QgsMapLayer):
layer = context.takeResultLayer(
result
) # transfer layer ownership out of context
if layer:
results[out.name(
)] = layer # replace layer string ref with actual layer (+ownership)
elif isinstance(out, QgsProcessingOutputMultipleLayers):
result = results[out.name()]
if result:
layers_result = []
for l in result:
if not isinstance(result, QgsMapLayer):
layer = context.takeResultLayer(
l
) # transfer layer ownership out of context
if layer:
layers_result.append(layer)
else:
layers_result.append(l)
else:
layers_result.append(l)
results[out.name(
)] = layers_result # replace layers strings ref with actual layers (+ownership)
else:
msg = Processing.tr("There were errors executing the algorithm.")
feedback.reportError(msg)
raise QgsProcessingException(msg)
if isinstance(feedback, MessageBarProgress):
feedback.close()
return results
def paintModel(self, model, controls=True):
self.model = model
context = createContext()
# Inputs
for inp in list(model.parameterComponents().values()):
item = ModelerGraphicItem(inp, model, controls, scene=self)
item.setFlag(QGraphicsItem.ItemIsMovable, True)
item.setFlag(QGraphicsItem.ItemIsSelectable, True)
self.addItem(item)
item.setPos(inp.position().x(), inp.position().y())
self.paramItems[inp.parameterName()] = item
# Input dependency arrows
for input_name in list(model.parameterComponents().keys()):
idx = 0
parameter_def = model.parameterDefinition(input_name)
if hasattr(parameter_def, 'parentLayerParameterName') and parameter_def.parentLayerParameterName():
parent_name = parameter_def.parentLayerParameterName()
if input_name in self.paramItems and parent_name in self.paramItems:
input_item = self.paramItems[input_name]
parent_item = self.paramItems[parent_name]
arrow = ModelerArrowItem(parent_item, -1, input_item, -1)
input_item.addArrow(arrow)
parent_item.addArrow(arrow)
arrow.setPenStyle(Qt.DotLine)
arrow.updatePath()
self.addItem(arrow)
# We add the algs
for alg in list(model.childAlgorithms().values()):
item = ModelerGraphicItem(alg, model, controls, scene=self)
item.setFlag(QGraphicsItem.ItemIsMovable, True)
item.setFlag(QGraphicsItem.ItemIsSelectable, True)
self.addItem(item)
item.setPos(alg.position().x(), alg.position().y())
self.algItems[alg.childId()] = item
# And then the arrows
for alg in list(model.childAlgorithms().values()):
idx = 0
for parameter in alg.algorithm().parameterDefinitions():
if not parameter.isDestination() and not parameter.flags() & QgsProcessingParameterDefinition.FlagHidden:
if parameter.name() in alg.parameterSources():
sources = alg.parameterSources()[parameter.name()]
else:
sources = []
for source in sources:
sourceItems = self.getItemsFromParamValue(source, alg.childId(), context)
for sourceItem, sourceIdx in sourceItems:
arrow = ModelerArrowItem(sourceItem, sourceIdx, self.algItems[alg.childId()], idx)
sourceItem.addArrow(arrow)
self.algItems[alg.childId()].addArrow(arrow)
arrow.updatePath()
self.addItem(arrow)
idx += 1
for depend in alg.dependencies():
arrow = ModelerArrowItem(self.algItems[depend], -1,
self.algItems[alg.childId()], -1)
self.algItems[depend].addArrow(arrow)
self.algItems[alg.childId()].addArrow(arrow)
arrow.updatePath()
self.addItem(arrow)
# And finally the outputs
for alg in list(model.childAlgorithms().values()):
outputs = alg.modelOutputs()
outputItems = {}
idx = 0
for key, out in outputs.items():
if out is not None:
item = ModelerGraphicItem(out, model, controls, scene=self)
item.setFlag(QGraphicsItem.ItemIsMovable, True)
item.setFlag(QGraphicsItem.ItemIsSelectable, True)
self.addItem(item)
pos = out.position()
if pos is None:
pos = (alg.position() + QPointF(ModelerGraphicItem.BOX_WIDTH, 0) +
self.algItems[alg.childId()].getLinkPointForOutput(idx))
item.setPos(pos)
outputItems[key] = item
arrow = ModelerArrowItem(self.algItems[alg.childId()], idx, item,
-1)
self.algItems[alg.childId()].addArrow(arrow)
item.addArrow(arrow)
arrow.updatePath()
self.addItem(arrow)
idx += 1
else:
outputItems[key] = None
self.outputItems[alg.childId()] = outputItems
def __init__(self, param, dialog, row=0, col=0, **kwargs):
super().__init__(param, dialog, row, col, **kwargs)
self.context = dataobjects.createContext()
